Synthesis of mesoporous silica and chitosan-coated magnetite nanoparticles for heavy metal adsorption from wastewater

Amin, Kazi Faiza; Gulshan, Fahmida; Asrafuzzaman,; Das, Harinarayan; Rashid, R.; Hoque, S. Manjura

doi:10.1016/j.enmm.2023.100801

Cited by 13 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of functional groups of MHA1, MHA2, and MHA3 was confirmed by FTIR results in Figure 3. The bands lower than 1000 cm −1 (541, 795, and 909 cm −1 ) were due to metal-oxygen bonds (Fe-O and Fe-O-Fe) (Amin et al, 2023;Kotnala et al, 2023;Li et al, 2021). The presence of peaks at 1026 and 1395 cm −1 was attributed to the stretching of C-O-C and bending of HCOO − on humic acid (Wang, Huang, Sheng, and Ma, 2023b) .…”

Section: Resultsmentioning

confidence: 98%

Fabrication and Characterization Fe3O4/Humic Acid for the Efficient Removal of Malachite Green

Ahmad,

Zahara,

Wijaya

et al. 2023

Sci. Technol. Indones

View full text Add to dashboard Cite

The dye pollutants that contaminate water and food resulting from commercial manufacture and illicit addiction are a worldwide threat that harms the ecosystem, the food supply, and the health of humans. Magnetite/Fe3O4 humic acid (MHA) with various ratios was synthesized using a two-step process involving coprecipitation and hydrothermal treatment in order to effectively overcome these obstacles. Analyses of SEM, XRD, FTIR, and VSM were used to describe the morphology and physicochemical aspects of MHA. The adsorption kinetics studies indicated that the adsorption mechanism of malachite green adhered to the pseudo-second-model and that the adsorption was adequately described by the Langmuir isotherm. The thermodynamic studies demonstrated spontaneous, endothermic, disorderly adsorption. MHA2 had maximal malachite green adsorption capacities of 83.333 mg/g. Malachite green and MHA may interact via interaction, electrostatic attraction, van der Waals forces, H-bonding, pore filling, pore locking, and/or mechanical adhesion; however, physisorption dominates the adsorption process. Malachite green's adsorption characteristics change significantly after up to four cycles. It has been demonstrated that MHA has a high capacity for dye adsorption and a broad range of potential applications.

show abstract

Section: Resultsmentioning

confidence: 98%

Fabrication and Characterization Fe3O4/Humic Acid for the Efficient Removal of Malachite Green

Ahmad,

Zahara,

Wijaya

et al. 2023

Sci. Technol. Indones

View full text Add to dashboard Cite

show abstract

“…Various research analyses studied the impact of chitosan as an antimicrobial and antifungal agent and its potential to make edible films and coating solutions for diminishing the post-harvest losses of fruits and vegetables [190,[193][194][195][196][197]. Other potential applications of chitosan for the environment are as a plant growth regulator [198][199][200], a flocculating agent for dye and heavy metal reduction [201][202][203][204][205], a water purifier [206,207], and as a bioremediation agent [208][209][210]. Szyma ńska and Winnicka [211] reported the stability concern of chitosan as a biomaterial, referring to the degradation of chitosan during storage due to the breakdown of its functional group.…”

Section: Chitosanmentioning

confidence: 99%

Microbial Biopolymers: From Production to Environmental Applications—A Review

Sharma,

Tellili,

Kacem

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

Industrial evolution and agricultural expansion, explained by continuing population growth, have rendered enormous problems for the world throughout the past few decades, primarily because of waste generation. To reduce environmental impact and dependence on fossil fuels, scientists have explored replacing synthetic polymers with environmentally friendly and sustainable alternatives in many emergent applications. In this regard, microbial biopolymers have gained special attention. Many biopolymers originating from various strains of bacteria, fungi, and algae have been reported and their possible applications have increased rapidly. This review focuses on the wide range of microbial biopolymers, their characteristics, and factors influencing their production. The present study also describes the environmental applications of microbial biopolymers. The use of these biopolymers is very attractive as a value-added and sustainable approach to wastewater treatment. By acting as adsorbents, coagulants, and flocculants as well as filters in membrane processes, microbial biopolymers shine as promising solutions beyond conventional methods. They can be integrated into various stages of the treatment process, further enhancing the efficiency of wastewater treatment methods. Microbial biopolymer applications in bioremediation and soil stabilization are also reviewed. Several studies have demonstrated the strong potential of biopolymers in soil improvement due to their ability to minimize permeability, eliminate heavy metals, stabilize soil, and limit erosion. Challenges related to scaling up and the downstream processing of microbial biopolymers, as well as its future perspectives in environmental applications, are also discussed.

show abstract

“…In the removal of heavy metals, activated carbon (Kong et al 2022 ), carbon nanotubes (F. S. A. Khan et al 2021 ), graphene oxides (Hosseinkhani et al 2023 ), mesoporous silica, and carbon materials (Amin et al 2023 ; Conte & Gómez 2024 ), clay particles (Ghasemi et al 2023 ; Zhang et al 2021 ), zeolites (Cheng et al 2021a , b ; Finish et al 2023 ; Ren et al 2022 ), and metal organic frameworks (Chu et al 2023 ; Ragheb et al 2022 ) are used. When all these methods are compared, it is a remarkable technology because zeolites can be obtained with low costs and energy requirements and can be used continuously (Velarde et al 2023 ).…”

Section: Application Areas Of Zeolitesmentioning

confidence: 99%

Synthesis of zeolite from industrial wastes: a review on characterization and heavy metal and dye removal

Eren,

Türk,

Arslanoğlu

2024

Environ Sci Pollut Res

View full text Add to dashboard Cite

Increasing world population, urbanization, and industrialization have led to an increase in demand in production and consumption, resulting in an increase in industrial solid wastes and pollutant levels in water. These two main consequences have become global problems. The high Si and Al content of solid wastes suggests that they can be used as raw materials for the synthesis of zeolites. In this context, when the literature studies conducted to obtain synthetic zeolites are evaluated, it is seen that hydrothermal synthesis method is generally used. In order to improve the performance of the hydrothermal synthesis method in terms of energy cost, synthesis time, and even product quality, additional methods such as alkaline fusion, ultrasonic effect, and microwave support have been developed. The zeolites synthesized by different techniques exhibit superior properties such as high surface area and well-defined pore sizes, thermal stability, high cation exchange capacity, high regeneration ability, and catalytic activity. Due to these specific properties, zeolites are recognized as one of the most effective methods for the removal of pollutants. The toxic properties of heavy metals and dyes in water and their carcinogenic effects in long-term exposure pose a serious risk to living organisms. Therefore, they should be treated at specified levels before discharge to the environment. In this review study, processes including different methods developed for the production of zeolites from industrial solid wastes were evaluated. Studies using synthetic zeolites for the removal of high levels of health and environmental risks such as heavy metals and dyes are reviewed. In addition, EPMA, SEM, EDX, FTIR, BET, AFM, and 29Si and 27Al NMR techniques, which are characterization methods of synthetic zeolites, are presented and the cation exchange capacity, thermodynamics of adsorption, effect of temperature, and pH are investigated. It is expected that energy consumption can be reduced by large-scale applications of alternative techniques developed for zeolite synthesis and their introduction into the industry. It is envisaged that zeolites synthesized by utilizing wastes will be effective in obtaining a green technology. The use of synthesized zeolites in a wide variety of applications, especially in environmental problems, holds great promise. Graphical Abstract

show abstract

Synthesis of mesoporous silica and chitosan-coated magnetite nanoparticles for heavy metal adsorption from wastewater

Cited by 13 publications

References 29 publications

Fabrication and Characterization Fe3O4/Humic Acid for the Efficient Removal of Malachite Green

Fabrication and Characterization Fe3O4/Humic Acid for the Efficient Removal of Malachite Green

Microbial Biopolymers: From Production to Environmental Applications—A Review

Synthesis of zeolite from industrial wastes: a review on characterization and heavy metal and dye removal

Contact Info

Product

Resources

About